035
FNCA52 TJSJ 251930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST MON MAY 25 2026
DISCUSSION
AS ANTICIPATED, LITTLE TO NO RAINFALL HAS OCCURRED ACROSS THE
SOUTHERN SECTIONS OF PUERTO RICO TODAY, AND DRIER AIR IS MOVING
INTO THE REGION, AS INDICATED BY SATELLITE-DERIVED PWAT IMAGERY
SHOWING VALUES OF 1.5 INCHES OR LESS. RELATIVE HUMIDITY VALUES
HAVE BEEN IN THE UPPER 40S TO LOW 50S ALONG THE SOUTHERN COASTAL
PLAINS, WITH WIND SPEEDS OF 16 TO 25 MPH AND GUSTS UP TO 33 MPH
IN THE SAME AREAS. THEREFORE, CONDITIONS REMAIN FAVORABLE FOR THE
SPREAD OF WILDFIRES ACROSS THE SOUTHERN COASTAL PLAINS OF PUERTO
RICO, AND THE FIRE DANGER STATEMENT (RFDSJU) REMAINS IN EFFECT
THROUGH THIS AFTERNOON.
PRZ014-260800-
SOUTHEAST COASTAL PLAINS-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 10 60
TEMP (24H TREND) 72 (-2) 88 (+1) 72 90
RH % (24H TREND) 93 (+8) 57 (+3) 93 51
WIND 20FT/EARLY(MPH) E 23 G34 E 18 E 13 E 16
WIND 20FT/LATE(MPH) E 16 E 18 E 12 E 16
MIXING HGT(FT-AGL/MSL) 4430 4170
TRANSPORT WND (MPH) E 21 E 16
VENT RATE (KT-FT) 79740 58380
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-260800-
SOUTHERN HILLS-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 20 50
TEMP (24H TREND) 69 (-2) 85 (+2) 69 86
RH % (24H TREND) 99 (+9) 67 (+3) 99 65
WIND 20FT/EARLY(MPH) E 24 E 16 E 13 E 12
WIND 20FT/LATE(MPH) E 17 E 14 E 12 E 12
MIXING HGT(FT-AGL/MSL) 4950 4340
TRANSPORT WND (MPH) E 21 E 15
VENT RATE (KT-FT) 89100 56420
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-260800-
NORTH COASTAL PLAINS-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 50 40 40 50
TEMP (24H TREND) 72 (-2) 87 (+1) 72 88
RH % (24H TREND) 97 (+6) 67 (+2) 99 66
WIND 20FT/EARLY(MPH) E 26 E 18 E 19 E 17
WIND 20FT/LATE(MPH) E 16 E 20 E 13 E 19
MIXING HGT(FT-AGL/MSL) 4270 4050
TRANSPORT WND (MPH) E 22 E 20
VENT RATE (KT-FT) 81130 68850
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-260800-
NORTHERN HILLS-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 20 60 30 70
TEMP (24H TREND) 70 (-1) 85 (-1) 69 86
RH % (24H TREND) 98 (+3) 69 (+7) 99 68
WIND 20FT/EARLY(MPH) E 26 E 17 E 16 E 16
WIND 20FT/LATE(MPH) E 12 E 18 E 10 E 17
MIXING HGT(FT-AGL/MSL) 5110 4050
TRANSPORT WND (MPH) E 18 E 15
VENT RATE (KT-FT) 81760 52650
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-260800-
WEST COAST-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 50 20 60
TEMP (24H TREND) 72 (0) 89 (0) 72 91
RH % (24H TREND) 94 (+4) 65 (+4) 96 62
WIND 20FT/EARLY(MPH) E 26 E 17 E 14 E 13
WIND 20FT/LATE(MPH) E 14 E 18 E 12 E 13
MIXING HGT(FT-AGL/MSL) 4200 3560
TRANSPORT WND (MPH) E 15 E 10
VENT RATE (KT-FT) 54600 32040
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-260800-
EASTERN INTERIOR-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 60 50 40 60
TEMP (24H TREND) 70 (-3) 85 (+1) 70 86
RH % (24H TREND) 100 (+9) 70 (+3) 100 68
WIND 20FT/EARLY(MPH) E 26 E 18 E 14 E 16
WIND 20FT/LATE(MPH) E 19 E 16 E 14 E 14
MIXING HGT(FT-AGL/MSL) 4500 4520
TRANSPORT WND (MPH) E 20 E 15
VENT RATE (KT-FT) 76500 58760
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-260800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 60 60 60
TEMP (24H TREND) 67 (-4) 81 (+2) 68 82
RH % (24H TREND) 100 (+7) 75 (+2) 100 73
WIND 20FT/EARLY(MPH) E 25 E 14 E 11 E 12
WIND 20FT/LATE(MPH) E 16 E 14 E 11 E 12
MIXING HGT(FT-AGL/MSL) 3470 3460
TRANSPORT WND (MPH) E 22 E 16
VENT RATE (KT-FT) 65930 48440
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-260800-
CENTRAL MOUNTAIN RANGE-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 50 20 50
TEMP (24H TREND) 67 (-2) 84 (+2) 66 85
RH % (24H TREND) 99 (+5) 70 (+6) 99 69
WIND 20FT/EARLY(MPH) E 21 E 11 E 12 E 10
WIND 20FT/LATE(MPH) E 11 E 12 E 9 E 10
MIXING HGT(FT-AGL/MSL) 5970 4590
TRANSPORT WND (MPH) E 16 E 12
VENT RATE (KT-FT) 83580 45900
DISPERSION 5 5
DSI 4 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-260800-
CAYEY MOUNTAIN RANGE-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 60 30 60
TEMP (24H TREND) 68 (-3) 80 (0) 69 81
RH % (24H TREND) 100 (+5) 77 (+7) 100 74
WIND 20FT/EARLY(MPH) E 23 E 13 E 11 E 10
WIND 20FT/LATE(MPH) E 13 E 13 E 10 E 11
MIXING HGT(FT-AGL/MSL) 3800 4090
TRANSPORT WND (MPH) E 21 E 16
VENT RATE (KT-FT) 68400 57260
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-260800-
VIEQUES-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 60 60 50
TEMP (24H TREND) 75 (-1) 86 (0) 75 87
RH % (24H TREND) 92 (+8) 65 (0) 94 64
WIND 20FT/EARLY(MPH) E 25 E 20 E 18 E 18
WIND 20FT/LATE(MPH) E 23 E 19 E 17 E 16
MIXING HGT(FT-AGL/MSL) 3260 2770
TRANSPORT WND (MPH) E 26 E 21
VENT RATE (KT-FT) 74980 49860
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-260800-
CULEBRA-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 60 60 40
TEMP (24H TREND) 75 (-2) 88 (+1) 76 88
RH % (24H TREND) 93 (+9) 62 (-5) 93 61
WIND 20FT/EARLY(MPH) E 25 E 20 E 18 E 18
WIND 20FT/LATE(MPH) E 23 E 19 E 18 E 16
MIXING HGT(FT-AGL/MSL) 3310 2870
TRANSPORT WND (MPH) E 26 E 21
VENT RATE (KT-FT) 76130 51660
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-260800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 0 20 10 50
TEMP (24H TREND) 73 (-1) 90 (+1) 73 91
RH % (24H TREND) 89 (+5) 53 (+2) 91 51
WIND 20FT/EARLY(MPH) E 27 G37 E 23 E 19 E 19
WIND 20FT/LATE(MPH) E 19 E 23 G30 E 17 E 19
MIXING HGT(FT-AGL/MSL) 4680 4030
TRANSPORT WND (MPH) E 24 E 17
VENT RATE (KT-FT) 98280 60450
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-260800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 60 30
TEMP (24H TREND) 75 (-2) 85 (+1) 75 85
RH % (24H TREND) 91 (+9) 67 (-3) 92 67
WIND 20FT/EARLY(MPH) E 26 E 20 E 19 E 18
WIND 20FT/LATE(MPH) E 21 E 19 E 18 E 16
MIXING HGT(FT-AGL/MSL) 3300 2840
TRANSPORT WND (MPH) E 26 E 23
VENT RATE (KT-FT) 75900 56800
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-260800-
ST CROIX-
330 PM AST MON MAY 25 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 60 50
TEMP (24H TREND) 75 (-1) 86 (+1) 76 87
RH % (24H TREND) 94 (+10) 67 (-3) 92 65
WIND 20FT/EARLY(MPH) E 26 E 19 E 18 E 16
WIND 20FT/LATE(MPH) E 20 E 19 E 17 E 16
MIXING HGT(FT-AGL/MSL) 3640 3590
TRANSPORT WND (MPH) E 28 E 21
VENT RATE (KT-FT) 87360 64620
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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